D-Net

        PreparedStatement prepStatem = conn.prepareStatement("INSERT INTO piwiklog (source, id_visit, country, action, url, entity_id, source_item_type, timestamp, referrer_name, agent) VALUES (?,?,?,?,?,?,?,?,?,?)");

        int batch_size = 0;

        for (String jsonFile : jsonFiles) {

            JSONParser parser = new JSONParser();

            JSONArray jsonArray = (JSONArray) parser.parse(readHDFSFile(jsonFile));